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author | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
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committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /dtc/libfdt/libfdt_env.h | |
parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'dtc/libfdt/libfdt_env.h')
-rw-r--r-- | dtc/libfdt/libfdt_env.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/dtc/libfdt/libfdt_env.h b/dtc/libfdt/libfdt_env.h new file mode 100644 index 000000000..73b6d4045 --- /dev/null +++ b/dtc/libfdt/libfdt_env.h @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) */ +#ifndef LIBFDT_ENV_H +#define LIBFDT_ENV_H +/* + * libfdt - Flat Device Tree manipulation + * Copyright (C) 2006 David Gibson, IBM Corporation. + * Copyright 2012 Kim Phillips, Freescale Semiconductor. + */ + +#include <stdbool.h> +#include <stddef.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <limits.h> + +#ifdef __CHECKER__ +#define FDT_FORCE __attribute__((force)) +#define FDT_BITWISE __attribute__((bitwise)) +#else +#define FDT_FORCE +#define FDT_BITWISE +#endif + +typedef uint16_t FDT_BITWISE fdt16_t; +typedef uint32_t FDT_BITWISE fdt32_t; +typedef uint64_t FDT_BITWISE fdt64_t; + +#define EXTRACT_BYTE(x, n) ((unsigned long long)((uint8_t *)&x)[n]) +#define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1)) +#define CPU_TO_FDT32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | \ + (EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3)) +#define CPU_TO_FDT64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | \ + (EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | \ + (EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | \ + (EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7)) + +static inline uint16_t fdt16_to_cpu(fdt16_t x) +{ + return (FDT_FORCE uint16_t)CPU_TO_FDT16(x); +} +static inline fdt16_t cpu_to_fdt16(uint16_t x) +{ + return (FDT_FORCE fdt16_t)CPU_TO_FDT16(x); +} + +static inline uint32_t fdt32_to_cpu(fdt32_t x) +{ + return (FDT_FORCE uint32_t)CPU_TO_FDT32(x); +} +static inline fdt32_t cpu_to_fdt32(uint32_t x) +{ + return (FDT_FORCE fdt32_t)CPU_TO_FDT32(x); +} + +static inline uint64_t fdt64_to_cpu(fdt64_t x) +{ + return (FDT_FORCE uint64_t)CPU_TO_FDT64(x); +} +static inline fdt64_t cpu_to_fdt64(uint64_t x) +{ + return (FDT_FORCE fdt64_t)CPU_TO_FDT64(x); +} +#undef CPU_TO_FDT64 +#undef CPU_TO_FDT32 +#undef CPU_TO_FDT16 +#undef EXTRACT_BYTE + +#ifdef __APPLE__ +#include <AvailabilityMacros.h> + +/* strnlen() is not available on Mac OS < 10.7 */ +# if !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < \ + MAC_OS_X_VERSION_10_7) + +#define strnlen fdt_strnlen + +/* + * fdt_strnlen: returns the length of a string or max_count - which ever is + * smallest. + * Input 1 string: the string whose size is to be determined + * Input 2 max_count: the maximum value returned by this function + * Output: length of the string or max_count (the smallest of the two) + */ +static inline size_t fdt_strnlen(const char *string, size_t max_count) +{ + const char *p = memchr(string, 0, max_count); + return p ? p - string : max_count; +} + +#endif /* !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < + MAC_OS_X_VERSION_10_7) */ + +#endif /* __APPLE__ */ + +#endif /* LIBFDT_ENV_H */ |